Database Users

Phone - The operation failed.

Quite often these days I am getting the issue mentioned above. Even soft resets do not seem to help. Until I reset a few more times.
What might be the cause of this? Thanks.
Hope someone might be able to assist on this. Thanks.

I'm also getting this message nearly every time I try to make a call. The phone then looks like it resets the connection with the cell tower and it successfully completes the call on the second try. Then the next time I try to call someone else it fails again. I came to this forum to see if anyone else has experienced the same problem.

Hey joej, I found out what might be causing the problem: make sure that your ActiveSync is closed before you try making a call. That fixed the problem for me.
Also, here's a quote from an email from one of my coworkers:
"Your Tytn was probably trying to dial a data connection at the same time that you were trying to dial voice and so it has to cancel the data request before you can dial out. There is a registry tweak you can do to the Tytn to keep the data connection always active when the phone is not in use and this may make it less frequent that you would have a problem
Activesync is supposed to stop when your data connection is unavailable. If you are making or receiving a call on the TyTN (or any GSM phone) your data connection will not be available and therefore not run. Do you have a lot of 3rd party apps running at startup as well? I have rarely had a problem with my Tytn and never during a call unless my battery dies on my BT headset mid call and then the device may get confused."
Hope this helps!

BlindDriver said:
Hey joej, I found out what might be causing the problem: make sure that your ActiveSync is closed before you try making a call. That fixed the problem for me.
Also, here's a quote from an email from one of my coworkers:
"Your Tytn was probably trying to dial a data connection at the same time that you were trying to dial voice and so it has to cancel the data request before you can dial out. There is a registry tweak you can do to the Tytn to keep the data connection always active when the phone is not in use and this may make it less frequent that you would have a problem
Activesync is supposed to stop when your data connection is unavailable. If you are making or receiving a call on the TyTN (or any GSM phone) your data connection will not be available and therefore not run. Do you have a lot of 3rd party apps running at startup as well? I have rarely had a problem with my Tytn and never during a call unless my battery dies on my BT headset mid call and then the device may get confused."
Hope this helps!
Click to expand...
Click to collapse
thanks for the update, i however am experiencing this issue once in a while and it is not with the activesync running nor a data connection going on. ugh..... guess mine is odd

Me too
Thank so much for the post count me in there too. I am southern central PA and just last week this started happening to me too. I have an 8525.
I have no acrive data connection nor any apps running that force a data connection. Every morning I have been resetting the phone 5-6 times before the freezing stops and it works. So annoying.
I am suspecting it is a network issue with cingular and them upgrading to 3g in my area. I suspect it as I had to travel north this week and discovered 3g coverage in Harrisburg so I am betting that is it.
I feel your pain and I have no fool proof thing to do on the phone to fix it. But man the phone on the 3g is fantastic.

duman95 said:
Thank so much for the post count me in there too. I am southern central PA and just last week this started happening to me too. I have an 8525.
I have no acrive data connection nor any apps running that force a data connection. Every morning I have been resetting the phone 5-6 times before the freezing stops and it works. So annoying.
I am suspecting it is a network issue with cingular and them upgrading to 3g in my area. I suspect it as I had to travel north this week and discovered 3g coverage in Harrisburg so I am betting that is it.
I feel your pain and I have no fool proof thing to do on the phone to fix it. But man the phone on the 3g is fantastic.
Click to expand...
Click to collapse
yup, everything rocks in it except the phone functionality really needs to be improved to be more usable.
do you know how i can use the phonepad to do t9 for replying SMS ? right now i am finding it hard to do so as i need to use the normal input methods which is not as easy as a normal cellphone

omg I'm from Singapore using Starhub think I'm having the same problem too. Dopod 838 pro.
A soft reset works for me, but very frustrating coz you dunno whether you are missing calls - the screen shows mobile is up with signal and all but people can't call in.
Just started happening to me past few days but then again I just took over the phone from a friend who bought it 3 months ago (latest batch)
So frustrating. ... seems related to the activesync.. but then again still happens when activesync's not involved.

duman95 said:
Thank so much for the post count me in there too. I am southern central PA and just last week this started happening to me too. I have an 8525.
I have no acrive data connection nor any apps running that force a data connection. Every morning I have been resetting the phone 5-6 times before the freezing stops and it works. So annoying.
I am suspecting it is a network issue with cingular and them upgrading to 3g in my area. I suspect it as I had to travel north this week and discovered 3g coverage in Harrisburg so I am betting that is it.
I feel your pain and I have no fool proof thing to do on the phone to fix it. But man the phone on the 3g is fantastic.
Click to expand...
Click to collapse
Same here anytime Cingy plays with towers, have you ever got a message stating the call can not be completed at this time? Been getting that one lately as well.

I think that it could be an issue with the phone heightened by the nature of the cell network.
I am wondering if the phone has issues handing off between cell towers as I have the band tab active and there are freq choices so I wonder if the phone even on gsm has some issues dealing with hand offs.
I locked it on gsm and still had issues with the phone. I locked it on 850 and still had phone issues. Put it in auto for the freq and still had issues.
On the U network on Cingular since its the only one the phone is excellent. Data and voice work great. So it will get better in the US for us on Cingular. But man its going to be really annoying during the roll out.

I'm on T-Mobile and I'm seeing this problem as well. (It didn't go away after closing ActiveSync like I said it did earlier.) The weird thing is that this wasn't a problem until about a week or two ago; now all of the sudden it's happening constantly.
Also, I just installed the newest HTC ROM (1.35.255.2) yesterday and now my phone has started to drop calls. I've never had a problem with dropped calls in the 2.5 years I've lived in this apartment.
Ain't technology grand?

Well things have not improved for me. Today after 8 resets the phone finally settled down and did not freeze and was able to get on the network. It has been terrible for me the last 2 weeks...
I removed the eten dialer skin I was using. I wanted to make sure it was not due to replacing the Cingular phone skin.
We shall see tomorrow if the phone is able to work without multiple resets..
If not it is off to a hard reset and re-load to see if that improves it any...

I have taken the plunge and did a hard reset plus reinstall of everything. I had the same apps installed again and the problem seems to be gone now. *touch wood* hopefully this doesn't come again... a restore takes too long. I have also installed Sprite and did a full backup of the phone including the memory card just to be safe.

This problem started for me this morning. (NYC/NJ Area - USA). I did a hard reset (actually, two) this morning, and it didn't fix it, even when the phone first finished the initial load (in a virgin state). Then, around 11:00am, it began to work again. Now, it's about 6:30pm, and I need the phone to call home to tell them I'm gonna be late, and it's out again. Seems like it's something not to do with the phone, but with the network (I hope). It won't connect in GSM, UMTS, or AUTO modes, FWIW.
Oh well, sure hope it doesn't takle two weeks to "go away".

returned
Well I returned mine. Did the warrenty exchange. So far so good. No freezing and the phone seems to hold onto the network ok now.
I truly believe mine was defective. As the phone would show searching and not connect to the network.
I think that not being able to make a data connection is a network issue as it clears up in a few days.

pvs said:
This problem started for me this morning. (NYC/NJ Area - USA). I did a hard reset (actually, two) this morning, and it didn't fix it, even when the phone first finished the initial load (in a virgin state). Then, around 11:00am, it began to work again. Now, it's about 6:30pm, and I need the phone to call home to tell them I'm gonna be late, and it's out again. Seems like it's something not to do with the phone, but with the network (I hope). It won't connect in GSM, UMTS, or AUTO modes, FWIW.
Oh well, sure hope it doesn't takle two weeks to "go away".
Click to expand...
Click to collapse
also in the same area, experiencing similar problems within certain specific locations. Noteably these are locations that I get SPOTTY UMTS service, so I assume a tower upgrade is in progress or something that is causing this. Where I have full umts service, the problem does not occur.
at times i have signal, but calls don't come through (rings to calling party, but goes to voicemail before my device rings).
This is something related to 3G because when the sim is put in a blackberry 8700c, everything works A-OK.
Glad to know i am not alone in this

I have similar problems. Especially in the university of Hannover. There is UMTS. Since a few days Data Connections via Active Sync don't work.
Before I had problems with calls. For example freezing during call.
And of course in the university and on other places I have often to do calls twice.
I called O2 for that problem. They are upgrading the cell around the university to HSDPA.

Hi to all !
I had the same problems, then i removed the microSD card and the problem was gone. Now i am testing the phone without miroSD card. I forgot to say that i had the problems with boot too(No GSM) and now it boot perfectly.
Best regards
O2 XDA Trion (dopod rom)

I finally had to return the phone under warrenty. It degraded to no gsm all the time fresh from a hard reset with no mem card. The new device has been flawless radio wise for a week now.

Problems with XDA Trion SOLVED !!!
Hi again !
The microSD card was NOT the problem ! I tested the phone without SD card but that was not the problem. Then i go to my provider and change the SIM card with new one (the old one was very old so i buy new one) and wauuu it works. The XDA TRION needs the sim card with UMTS suport then it will work fine. So far NO freezing at all. I will let you know in a few days if something strange will hapen.
Best regards

Hi, to all with the problem “The operation failed” when trying to make a call:
Try to switch off bluetooth (specially if you are in UMTS (CMDA) network) and then try to make a phonecall again.
For me this helped to solve it.
First I also thought that it’s only a Provider network problem (I have 2 different providers, with one it works, with the other I have the “operation failed” problems).
So it is 100% a phone software problem. (Shame to HTC)
Give feedback if it helped you too.

HSDPA, will donate for help!!

Hi guys, i know this is a common problem amongst some of us, there are several threads discussing the connection drops but please there must be someone out there who knows something about it.
Basically with HSDPA enabled, the connection will last a random period of time before disconnecting by itself and displaying: cannot connect for an unknown reason.
When HSDPA is turned off, only 3G is used, although this works fine, it is fairly slower.
I am on T-Mobile UK, I have phoned their technical support, we have established it is not the sim card but the phone itself and have tried a variety of steps to solve this, for example receiving band settings for WCDMA, this has not fixed the problem.
I have tried changing the username and password combinations and have tried every combination of every advanced network option. I have used the T-Mobile stock rom 1.43, official HTC ROM 1.66, duttys hg, energyROM, artemis 5.0 and artemis 5.5 (would recommend btw) using MTTY before every flash, and every single different radio combination.
Myself, and many people here would be very grateful for any help posted.
Thanks in advance

Why don't you try Settings > Connections > Advanced network > GPRS tab > change from PAP to CHAP.. and reset... or viceversa.. that helped for me..

Thanks for the post, i've tried all that i've tried all advanced settings, at most they last for a day or so but after a while the connection dropouts seem to worsen

Ok ive just gotten off the phone for the third time with the technical support
basically what they've said is that the hsdpa WILL disconnect because the mobile towers simply can't handle the traffic.
He said in his honest opinion I should disable it because it simply won't work well and there is no fix.
Taking the piss juuuuust a little bit

Mine on t-mobile uk will show H, but usually drop down to 3G. It won't give me an error when it drops down though.
It sounds like its not transferring from H to 3G.
To be honest, i was unaware t-mobile ran HSDPA till I got my HD2 (never showed on my BB).

mine switches between 3G and H too, this happens when the connection is being used (for example loading a web page) when the job is finished (page has finished loading) it turns back to 3G right?
are you saying that your connection never disconnects?
may i ask which radio and rom you are using?
thanks!

For my personal experience, I have for over a month, on versions 1.48, 1.66 by HTC, artemis versions, versions of other French chefs. had no problems,
Login Exchange push 24/24 without any cuts, I solicited the network with opera I passed automatically 3g H, and since February it to completely fall with the problems that everyone encounters (lost connection for several minutes , unable to connect to 3G without hard reset)
to remove the sim chip, I try with another chip of the same operator, another chip from another operator, the problem is still there.
For several days I have also continued a Touch HD, it faces no problems, no problems in connection 24/24.
In short, impossible to challenge any operator, any base station, any sim card.
It is then that the problem come from HD2:
-Software: We all try every combination of rom and radio rom possible.
It is the hardware, maybe the chip integrated into a concern for design, manufacturing concerns on some series, may be dysfunctional due to incompatibilitée between several chips of the phone, short, HTC should look into the problem.

cgrec92 said:
mine switches between 3G and H too, this happens when the connection is being used (for example loading a web page) when the job is finished (page has finished loading) it turns back to 3G right?
are you saying that your connection never disconnects?
may i ask which radio and rom you are using?
thanks!
Click to expand...
Click to collapse
correct, it never disconnects.
It will switch seemlessly between them, when using or not using.
same one it came with. O2 HD2.
ROM 1.43.206.4 (70315) WWE
RADIO 2.04.50.22_2

I've also been struggling with this problem ever since I got my HD2 three weeks ago. However it seems like only a few people experience this.
My case is exactly like cgrec92 described. I'm on a 3.5G network in Denmark (3 Mobile), the phone shows the 3G connection at all times. When things do work and I use Opera/weather/Twitter/email etc, the symbol changes to H and I know the data connection is functioning. I can be using this for a whole hour without any problems.
However, if I put the phone down for a while and then pick it up again to use one of its data services, very often it does not connect to 3.5G (or H) anymore. It will still show the 3G icon on the screen, but there's no data connection. Then I go to Connection Manager and I can see that data connection shows as Off - and after a few seconds it goes back to On by itself That does not mean the problem is solved, as the phone still fails to establish any data connection. What I need to do then is manually turn off data connection and re-enable it again, which makes the 3G symbol immediately change to H. Then everything starts working again - until the next time it stops working...
I contacted the HTC customer service and they said it might be a driver-related issue, recommended a hard reset. I did that and for a few hours I thought it solved the problem, but no, data connection still disconnects by itself.
I spoke to 3 Mobile's technical service and they told me to update my software, which I had already done previously (I'm running stock 1.66 ROM Danish). They also said they never received any such complains about the HD2.
Like cgrec92 I've also played with all kinds of network/band settings, but it did not make any difference.
***
One question: isn't the phone supposed to automatically connect via EDGE when it cannot connect via HSDPA? Because in my case it will only establish data connection via H, never EDGE.
Any advice is greatly appreciated!

My take on this FWIW
It's not the phone!
It's the radio ROM installed.
I live in an an area where T-mobile say I can't get HSDPA.
However, I know that I can. How? Because 3 network uses the same local cell and transmitter as T-mobile and their signal will rip your eyes out!!!!!!!!!
All information obtained from a good friend of mine who works for BT, who, service manage the cells for the networks.
Plus, in this location, the cell traffic is then handled by BTs digiatal backbone which takes it who knows where after that.
So I have a very isolated situation in which I know there is a decent HSDPA signal, but I have had trouble with drop outs on my two previous phones (Nokis 5800 and HTC Touch Diamond 2) and originally on my two T-mobile mobile broadband feeds using Huawei E220 cell network modems.
All fixed when I finally found the right Radio and flashed it on the phones and unlocked and flashed the latest modem firmware.
My broadband connections are always on and never drop out and my HSDPA signal on my HD2 is through the roof!
To further emphasise the point all the equipment is used (when home based) behind solar glass which is notorious for blocking mobile phone signals.
Land on the best one and you will get incresed battery life as well.
Bottom line is try the latest radios (2.08.50.08_02 in my case) and I think you may be surprised at the results.
Current result of speed test 09.31 hours
ADSLSPEED.COM | Speed Test
3 minutes later
ADSLSPEED.COM | Speed Test

I have the same problem with the connection dropping. What I did to make it work was to disable HDSPA and putting GPRS to CHAP instead of PAP, and so far I have no problems at all

Thanks for the reply and tips. I also did the same earlier today, except that I did not change PAP to CHAP :O. I was waiting until tomorrow before I posted any results, but I gotta say so far the connection has been stable just like yours.
I also called HTC's customer service in Denmark and the fellow I spoke to was very helpful but he said he has never heard about such problems. He sent me updated network settings via sms, but it did not fix the problem.
I mean, only some users around the world suffer from this problem, right? So what is it that's wrong with our devices? Is it a production fault? If I exchange my phone for a brand new one maybe I won't be unlucky again? When 3 DK finally told you the problem was unfixable, did they mention other users with the same issue? Did they ever offer to replace your phone?

DORMIU said:
Thanks for the reply and tips. I also did the same earlier today, except that I did not change PAP to CHAP :O. I was waiting until tomorrow before I posted any results, but I gotta say so far the connection has been stable just like yours.
I also called HTC's customer service in Denmark and the fellow I spoke to was very helpful but he said he has never heard about such problems. He sent me updated network settings via sms, but it did not fix the problem.
I mean, only some users around the world suffer from this problem, right? So what is it that's wrong with our devices? Is it a production fault? If I exchange my phone for a brand new one maybe I won't be unlucky again? When 3 DK finally told you the problem was unfixable, did they mention other users with the same issue? Did they ever offer to replace your phone?
Click to expand...
Click to collapse
Erm!
It's your radio!
But, I think I did say that in a previous post.
You had a helpful fellow who sent you updated settings?
And he thought that was going to fix your problem?
That was helpful!
It's your radio!
The technicalities are beyond a customer assistant at the end of a phone. They work from a script.
I'll send you the settings.
Have you done this?
Have you done that ?
Never heard of anyone else with your problem!
It's your radio!
T-mobile uses PAP protocol (at least they do here in the UK) and it's a handshake protocol so changing that won't really do anything to the signal definition.
You have it or you don't.
It's your radio!
There is no "production fault".
You are not "lucky" or "unlucky".
You are in an area where you will suffer from this because of the ???????
THE RADIO!
I think I have made my point.
If it turns out that you don't have a radio issue then please feel free to admonish me.
Until then----------
It's your radio!

well I don't mean to sound rude but do you SERIOUSLY think we haven't tried that? ive tried every possible radio available here and every different rom, so excuse us for trying new things.im glad your not having any troubles yourself because it is really annoying
perhaps you could post us your rom and radio?
I don't suppose you could post us your settings in advanced network?
did you use the connection setup?
thanks for your help

Yes, I was about to mention something similar. I haven't tried combining different ROMS & Radios myself, but I know people like cgrec92 who have with no good results.
And if it is the radio, then every 3 Denmark user like me would be experiencing the same problem, correct? I don't think that's the case. Actually when you read the forums you will find users from different countries with this problem, and they/we are not the only ones with a certain combination of ROM/Radio.
So yes, by disabling HDSPA I finally managed to have a stable data connection (but no 3.5G, obviously). At this point no one seems to know the cause of this issue, but I suppose it's naive to expect a future ROM to solve it, after all it's not a widespread problem. Is HTC even working on it? Are we sure it's not our devices that are faulty?
I honestly have no idea, but I cannot just accept this problem and live with it after all the money I put into this phone. That's why I brought up the possibility of having it exchanged for a brand new one in hopes that it will not have this problem.
Any ideas?

cgrec92 said:
well I don't mean to sound rude but do you SERIOUSLY think we haven't tried that? ive tried every possible radio available here and every different rom, so excuse us for trying new things.im glad your not having any troubles yourself because it is really annoying
perhaps you could post us your rom and radio?
I don't suppose you could post us your settings in advanced network?
did you use the connection setup?
thanks for your help
Click to expand...
Click to collapse
The post by pa49 was to DORMIU.
I'll pm you my t-mobile settings.
And I cant use the connection setup, being an O2 HD2, it only allows selection of O2.

cgrec92 said:
well I don't mean to sound rude but do you SERIOUSLY think we haven't tried that? ive tried every possible radio available here and every different rom, so excuse us for trying new things.im glad your not having any troubles yourself because it is really annoying
perhaps you could post us your rom and radio?
I don't suppose you could post us your settings in advanced network?
did you use the connection setup?
thanks for your help
Click to expand...
Click to collapse
I referred to my radio in my previous post -20.08.50.08_02.
My OS ROM is Leo Lite 3.
Connection setup used and no further settings.
My explanation for this is the fringe nature of the received signal.
The radio its constantly 'hunting' for a signal and the radio software has difficulty in locking on.
BTW OS ROM and settings ready don't affect the efficiency of the radio signal.

MidnightDraven said:
The post by pa49 was to DORMIU.
I'll pm you my t-mobile settings.
And I cant use the connection setup, being an O2 HD2, it only allows selection of O2.
Click to expand...
Click to collapse
I appreciate the help, but he doesn't seem to understand the issue here. It's not that we have low connection, or that we cannot connect to the 3.5G network. The problem is that the phone's data connection will automatically disconnect even when we are in an area with full 3.5G signal. The phone will connect for a while and then, moments later, in the same spot and with full signal, data connection is terminated. So I just can't see how the radio has anything to do with that, especially when there are hundreds of other users out there with the same ROM & Radio as us and in the same network. And yet they do not experience this problem.

Ive have similar issues but it depends where i am it appears that some towers its ok where others its not!

mo
DORMIU said:
I appreciate the help, but he doesn't seem to understand the issue here. It's not that we have low connection, or that we cannot connect to the 3.5G network. The problem is that the phone's data connection will automatically disconnect even when we are in an area with full 3.5G signal. The phone will connect for a while and then, moments later, in the same spot and with full signal, data connection is terminated. So I just can't see how the radio has anything to do with that, especially when there are hundreds of other users out there with the
same ROM & Radio as us and in the same
network. And yet they do not experience this problem.
Click to expand...
Click to collapse
The radio differentiates between all the different levels and types of signal and it depends on how exact it interprets the signal. They are supposedly optimized before release and then re optimized with each newly released version. Network operators then have their own network parameters and again the radio has to accommodate this as well. One radio will never satisfy all these criteria and some of you will be in the wrong place at the wrong time on the wrong network with the least effective radio.
I can assure you that I most certainly do understand the problem and that is why, in my own case, I have resolved it.

HD2 no signal, shows exclamation

Hi everyone, my HD2 just stopped working with no signal at all.and shows a exclamation all the time, sim cards are no problem. i've updated the phone with official sw, still have this problem at the beginning.

has the phone been blacklisted?
is the phone turned on in wireless mode in settings? ( ya never no)
is it still under warranty?

My HD2 has done the exact same thing, just shows an !
it doesnt even try to find a signal.
phone was a tmobile UK version, which was unlocked to use any network.
the problem has literly just happened today.
have tried different offical roms, and different sim cards.

sebstermw said:
My HD2 has done the exact same thing, just shows an !
it doesnt even try to find a signal.
phone was a tmobile UK version, which was unlocked to use any network.
the problem has literly just happened today.
have tried different offical roms, and different sim cards.
Click to expand...
Click to collapse
Just phoned my provider in regards to my phone, quoted the emei and have been told the phone is blacklisted.
they are sending a request to have it unbarred. will post the outcome.

I have had this happen alot with Vodaphone UK. This is a brand new number so doubt it has been black listed.
I can get this working my turning the phone to airplane mode then back to phone mode, this most of the time makes the phone look for a signal.
Usually happens to me when there is no signal like in a tunnel, the phone does not seem to try looking for the network until you force it to.

This is possibly a fault with the timeout of the HTC HD2. Could be once it tries to connect when out of signal the device gives up after a number of attemtps.
Does anyone know?t

paul211b said:
I have had this happen alot with Vodaphone UK. This is a brand new number so doubt it has been black listed.
I can get this working my turning the phone to airplane mode then back to phone mode, this most of the time makes the phone look for a signal.
Usually happens to me when there is no signal like in a tunnel, the phone does not seem to try looking for the network until you force it to.
Click to expand...
Click to collapse
I was searching before posting for just this problem.
It is really irritating me. The phone can jump from deciding there is no signal to sometimes even going to full-bar "H"!
I hav currently resorted to turning off 3G as at least that way I am eliminating the idiocy of it prefering 0/1 bar of "H" vs near full non-3G reception for calls.
Even so at times it will just sit there for ages having dropped a signal with the exclamation showing and then jump back to life [in the same place] with good reception.
I am also on Voda UK

Mine has done that twice, in 4 months. 1 time phone was turned off inside connections, no idea how? 2nd time I just shut off, & back on, signal was back, hasn't happened in months now?

so does anyone have a solution to this problem?
I've checked with my service provider and my phone is not blacklisted...
My SIM card seems fine and everything else seems fine, except it keeps giving me the exclamation mark.. most of the time i notice it's when i get out of the lift (but that could be because that's when i usually check my phone before I put it on my desk).
There are many occasions (probably 5+ times/day) where I turn my phone on (ie, off standby) after it's been sitting on my desk for an hour or so to check calls, etc and there is that dreaded exclamation mark.
I know the area around my desk does have a signal because the guy next to me on the same network has a strong 3G and 2G signal.
Sometimes going to Comms to turn airplane mode on and off to force it to look for a signal works, but sometimes it doesnt.
I've tried soft-resetting, hard-resetting, using different radios, different ROMs, etc and still no good.
Funny thing is, it's only been happening over the past 2-3 weeks.. and I'm not sure what triggered it.
It's really starting to frustrate the crap outta me and friends have been asking why they can't get through...
Any help would be appreciated.. . I'm trying to avoid sending it to the HTC service centre if I can because they're slooooow and the stories I've read about my local centre are pretty bad (when I had my HTC diamond).

Solved:upgrade your rom everything gonna b in place

Upgrade to what?

I am having the same problem, for a hile now. Been fiddling with phone settings parameters, trying to see the effect. One particular combination so far seems to work. Try this: Comm manager --> Phone --> Tap Change Phone settings --> Menu --> Advanced network --> GPRS --> select CHAP authentication --> then CSD Line Type --> select Data rate 9600(v.110). Then OK, Back, and Done with the Comm manager. Observe if the network pickup performance (switching from non-existent H or 3G to E or G) works better for you after that. It does better for me, so far.

I'm having the same problem - NO SIGNAL
Any solution?

i recently discovered that for my problem, it was to do with the earphones. Not sure why, but it only seems to happen to me not long after i plug or unplug the earphones.
I usually have my HD2 on my desk with the music going while I work, but every hour or so, I unplug the earphones and take my phone by itself out with me for a cigarette.. then I come back and plug the earphones back in.
Often when I'm about to head downstairs, I turn on the screen while the music is still going and i see the "!"... as soon as I unplug the earphones, the bars indicating reception comes back straightaway!
Not sure if it's a coincidence or whether it really does have something to do with the earphone/earphone jack.

Since I upgraded to the Vodafone rom on the htc website I have not had this problem

htc hd2 no signal
i having a hard time with my htc hd2 its been a week that i dont get a signal and my phone dont recognize my sim..i read a lot of suggestion and help here in forum but all of them did'nt work...
please help i had htc hd2 been brought here in italy.im using wind operator.
Please somebody help!!
Manila Version: 2.5.20153712.0
Rom Version: Energy Rom
Radio Version: 2.07.50.27_2

paul211b said:
Since I upgraded to the Vodafone rom on the htc website I have not had this problem
Click to expand...
Click to collapse
I have just bitten the bullet and accepted the phone is crap at swithing between 2G and 3G signal so turn off 3G in a couple of locations when I know I get this problem [home - I can use WIFI] and my office.
HTC would not be drawn at all on un updated Radio and this problem being "fixed" in USA ROMs

Fixed
the very easy fix is to do this :
settings _ personal _ phone _ network then make network selection to manual ,, then choose ur provider,,, then u will have signal,, after that u can turn it back to automatic
100% working

Thanks a "fix" not a solution.
Rather silly to have to jump through hoops to make a mobile phone recognise available reception

Have the same problem
I have the same problem now, any solution for that?

gsm/3g problem - dealbreaker :(

This might force me to use samsungs dead-on-arrival-refund and switch to the both uglier and slower Desire Unless you have a solution.
The phone finds several networks where two are associated with my telecom-provider. One is old gsm and one is 3g/H. I search and manually picks out the 3g-network and gets an H-connection with 2 mbps (max for what I pay for). But this only lasts for about 10 - 20 seconds, then it falls back to the gsm-network.
So to speek, it overrides my manually selected network and uses an automatic pick and i get gsm with crappy 56 kbps.
I have done this:
1. a new sim-card (telecom sent me one)
2. Resetted the phone (samsung asked me to do this)
The problem is still there and samsung now say I should send it back to them...
But what are the odds that it will work on another device... the problem is probably a combination of phone + telenetwork. The simcard works perfectly in the same location on the Touch HD (blackstone) and the sales-dude that also claims to have an SGS with another network have no problems.
Swedish telecom-provider: TELE2
Help...! I dont wanna switch to a 9 month old desire and the desire hd looks like the specs are the same as sgs without the samoled and a too large 4,3" screen.

Have you asked the sales dude which firmware he is using? This sounds a bit software related. It can definitely be teleco, however I think you're paying a premium doing more than keeping up appearances should be important to them.
Sent from my SHW-M110S using XDA App

Did you try setting the phone on "WCDMA ONLY" in the network menu?
Every time the phone gets a stronger GSM signal, it will switch to gsm, just like any other phone.
Just disable GSM.

hmmm no i have not tried that... sounds quite promissing, but if it works that will result in no network at all if i go outside a 3g-area, right?
I have stock rom at eclair.xwjfb - i90000xxjf5
But where do i find this option? from a secret code?
in the network-menu i only have "use only 2g networks"
EDIT
Found this:
*#*#4636#*#* for battery and other general setttings like GSM/CDMA
Testing.....
EDIT
No change
I set it to WCDMA ONLY and tried all the other options as well. Most of them resulted in to network access.
###! this sounded so good

so all i have to do is type that number i get the option to only use 3G covarge right? is that how you did it?
Tackar!

yes but read it again - did NOT work
are you having the same problem with tele2?

Ah okey, such a shame. Nope, i'm using Halebop, but if you have this problem i might also experiance it aswell, hopefully not though..
But my phone had a really strange problem which caused me to send it back, it lost the signal completly, like i had no simcard in it. This could accur around 20min-4 hours, and i seem to be the only one affected by this.. really strange, hopefully i'll get my phone back soon without this problem, whatever it might be..

im returning it today as a d-o-a and will hopefully get a new one that works. Would really be a shame to let go of such a nice handset!
the wifi-radio cant stay connected to dynamic ips either, something that clearly works for others with sgs

Just replace it with another. I think your unit is defective.
There have been no reports of network problems with the SGS, and personally, i live in a place with terrible coverage, but when i set to WCDMA only it still somehow manages to maintain a good signal.

surely this could also be due to not all places being covered by 3g signal.

possibly but not likely sinse i can manually force it to use another network and then max out the payed bandwith of 2 mbps easily, but only for a very short period of time...
anyway, its sent away now. Hopefully they fix this fast

[Q] Problems with data connections

Hello all,
Im "happy" owner of new i9100. Everything works great except data connections. When im standing still in one city everything works great. Problems starts when im moving city to another. When 3g drops to 2g or other way my data connections are totally lost. My phone finds the new network, network indicator is full and phone / sms works great. Only thing what is missing is data. This happens every time. Due to my work i drive a lot in a day and thats why this pisses me off. Its not my operator because iphone 4 works like it should. Ill tried three different rom and allways same results. Im forced to use my "superphone" locked to 2g networks ...Shouldnt be like that.
Any suggestions? Could it be hardware ?
- Joni / Finland

Get a replacement...most probably your phone is defective...i had same exact problem on my first SGS2...nothing could cure it....and my second SGS2 which i got does not have this problem at all...using it with the same telco, in the same spot, does not reproduce this defect on my second phone...so for me the first phone was defective when using mobile internet in gsm/wcdma auto mode.